The 49.4C02 error usually follows a paper jam. When the customer closes a door after clearing the jammed media from one area of the printer, the control panel immediately posts a 49.4C02 error. Often, the customer will then power cycle the printer and it will hang at Checking Printer. For the 49 error to occur, additional media must still be stuck in the paper path.
Firmware version 5.005.3 contains a fix that allows the printer to recover and notify the customer of the location of the additional jammed media in the paper path. Customers who experience this issue should update to the newer firmware. This version of firmware also fixes the issue with the printer hanging in Checking Printer.
Since a paper jam is the event that triggered the 49 error, if paper jams continue, troubleshoot as necessary.